Pelt stretching machine



Jan, 1, 195@ J. J. MOWAD 9 3 I FELT STRETCHING MACHINE Filed Feb. 10,1949 6 Sheets-Sheet l Jan. 10, 1956 J. J. MOWAD 274939924 PELTSTRETCHING MACHINE Filed Feb. 10. 1949 e Sheets-Sheet 2 INVENTOR.

day/v Mon Hp Jan. 10, 1950 J. J. MOWAD FELT STRETCHING momma Filed Feb.10, 1949 6 Sheets-Sheet 3 I INVENTOR. da /N d. Man #0 flrrOR/VEY Jan.10, 1950 J. J. MOWAD PELT STRETCHING MACHINE 6 Sheets-Sheet 5 Filed Feb.10, 1949 M-QW INVENTOR.

Y i C/OH/V (Z Mon 40 Jam-10, 1950 I J. J. MOWAD 14 9 FELT STRETCHINGMACHlNE Filed Feb. 10, 1949 6 Sheets-Sheet 6 INVEN TOR.

(/OH/V Mon/470 Patented Jan. 10, 1950 UNI TED .S IAT3E:S PATENT DFFl-CE'iPEL'I. .S TRETCHING -MAGH1N E llo'hn Mowad, Newark, J.

Application February 10, 194L1Serial 75,5370

(cite--33.)

iiGlaims. 1

This invention deals with means for stretching pelts, and morespecifically, 'to novel machines-for two-directional stretching of peltsused "in the hatters fur and similar industries.

Among the noveljfeatures embodied in 'the present invention are rapidmeans for changing the rate of stretch by changing of only a few gears,also the prevention of sticking of ,pelts to the rolls and independentadjustment of pressure pn each set of rolls. Other improvements includeready removal of the upper section "of the machine without the necessityof disenga g belts orgears, easy adjustment of spacing of the rollers,and ready accessibility of all parts.

The invention will be .more readily understood by'reference'tothedrawings in which'Figure .1 a 'front view of one embodiment of a machineconstructed in accordance 'with the "present invention. Figure 2 'is-arear "view 'of'the same machine. The right side view of the machine isillustrated in Figure 3, while "Figure '4 is 'a'partial top view showingthe right portion of the machine. A cross-'sectionalview'o'fthesame'machine, taken along line VV of "Figure 1 is depicted in Figure5. Figure-6 is a side View showing the bearing box detail, while Figure'7 is a schematic drawing illustratingthe stretching of a peltas it isdrawn "through *the machine. "Similar numerals refer to similar parts inthe various figures.

Referring again to the drawings, numerals "I and -2 represent a pair oflaterally ribbed, counter-rotating rollers superimposed upon'eachioth'er with ribs meshing so 'as to enable drawing therethrough ofpelt 65 ied'therebetween. Theserdllers are mounted at their ends onframe It atta'ched to frame support t "bymeans of bolts f1. Reinforcingcross bars 13 and HS are disposed "between supports l5. Behind 'rollersI 'and'iz are mounted, in tandem relation thereto, another pair ofrollers "3 and lyalso superimposed on'eac'h other, counter-rotating, andribbed in a similar manner to rollers I and '2 and rotating atafasterspeed so that pelt 65 passing between rollers land 2 is stretchedlengthwise as it is picked 'up and drawn between rollers '3 'and l. "Thelatter two rollersiare preferablyinibbed imherringmone fashion .asillustrated in the drawingsso that the pelt is also stretched sidewiseaszitis pulled between rollers-3 and'l.

Upper rolls 1 and 3 are also provided withrcirequal to theheightiofitheiribs. These grooves rare spaced close enough together toinsure at least filj 2 one :.contacting the pelt .to be stretched. Thisspacing may be about 3 to -6 apart, more or. less. Mounted on the frames(which compriseithessides of the-machine? are front finger bar .5 andrear finger bar 28 \disposed above the upper rolls il and 3 respectivelyand somewhat outwardl from the centers thereof. Attached to .saidfingerbars 6 and 28, and disposed downwardly .are :arms :or front fingers i5and rear fingers 29, respectively, the bottom tips of which ride ingrooves and BI. respectively, thereby :enabling :picking up of peltswhich may have stuck *to the upper rolls and would otherwise makeanother revolution around .them, thereby causing damage to :such peltsas well as; others which may :ha-Ve been ,fed between the rolls :in theinterim. The front finger bar 6 is attached to support 20 whichprojectsfrom hearing box top plate 1-9 attached to the =top-offrame H3. The rearfinger :bar 28;-is attached to .bar clamp 21 which .is fastened to plate3.0 ,bymeansof screw 15. -Screw M .isalso provided for fixing ithe,position of finger bar 2% (Fig.6).

. As can be seen in Riga- 6, the .ends 1of the rollers l, 2, .3 .and l.are provided 'withjournals -2 l ,:22, :13 and 1211, respectively whichare encased :in :bearing .boxes 35., .36 and 31., the .latter :being varm ideii with replaceablesplit bronze bushings :39 in which each .of.the shafts rotates. It will be .observed that hearing box 3! (splitlengthwise atJ-fl) and resting .on .frame 18, is .a single blockencasing journals '22 and .24, while Journals 2 I and 23 are separatelyencased in bearing :boxes 35 and 3.6 which are disposed .oy'erdil andseparated :therefrom 'Joyspacer plate 38. Plate 1:8 which serves as .ahearing box .guide is v mounted on frame 15 by means of bolts I1 and isprovided withdtop plate I9 which ,is fastened to frame 48 land \iSprovided withfholes 1| through which'or in which ride helical springs.32 and-32 i, :a pairon'eachend of the .machine .for impressing .apressure upon the upper rolls. .Due to the fact that hearing boxes 35and 36 areseparatedat .12, it is possible to impose different pressuresupon rolls :1 and The upper portions .of springs 32 which emerge aboveplate 19 are .housed .in hollow cylindrical sleevesor guides 3L Thesearecovered by adjust,

ing screw plate .30 which is'held tight by bolt'rfi3 .screwed into plateI9, which bolt also holds -in place guides "3| aingrooves 13in ,plateI9. vSprings 32.-arecovere.d .by ,pressure .plate 168-021 which pressure.is transmitted by .means of spring adjusting screws .33 provided -.With.lock .nuts 3.4.

Attached to side frame membersonsupports J5 (on each side of themachine) are base plates I] (Fig. 3) on which are mounted the ends ofadjustable arm 40 by means of bolts 44. The ends of arm 40 are providedwith arcuate slots 14 in which bolts 44 ride. By this means it ispossible to loosen bolts 44 and rotate arm 40 (to a limited extent, i.e. the limits of slots 14) with the center section of arms 40 acting asthe .center or axis of rotation.

At the center ofrotation are mounted the ends of drive shaft M whichproject out from plates40 and allow mounting thereon of gear I2. Alongside gears I2, and fixed to plate 40 (reversibly disposed on each sideof the machine) is vertically directed arm 15, on the upper portion ofwhich is mounted short shaft 42 carrying changeable gear I0 and gear Hand provided with'compound bushing 43. Gear ll meshes with gear 12. Gear[0 may be changed and larger or smaller gears may be substituted,adjustment being made at the ends 14 of arm 40, corresponding to thesize of the gear.

Journal 22 projects on one side of the machine and on said projection ismounted gear 9 which engages gear I0. Likewise, journal 24 extends fromthe other end of the machine and carries a similar gear, both geartrains being driven by drive-shaft l4.

Each pair of rolls is geared together on the opposite side from thedriven gear train. For example, gears l and 8 are used to transmitrotary motion to roller I while gears 25, etc. act in the same mannerfor roller 3. Drive shaft I4 is provided with pulley 46 which isconnected by a belt to pulley 41 of motor 48 mounted on lower crossbars[6. Clamp 45 is attached to the end of shaft 42 to hold the gear inplace after changing gears. Clamps 64 are mounted on the frame to holdthe ear covers. a

The front and rear of the machine are provided with tiltable tables '54and 55 respectively (Fig. which are not shown in Figs. 1 and 2. Theseare mounted on upper cross-bars I3 by table adjusting clamps 56 andbolts 51, the tables being of such height as to allow sliding of peltsfrom the table directly between rolls l and 2. A finger guard 5| is alsoattached to guard assembly'frame 49, allowing an adjustable feedingspace which will not allow the fingers of the operator to con tact therolls. Top plate 50 is likewise mounted over guard assembly frame 49 tocover the upper r'oll sections (Fig. 4). V

As can be seen from Fig. '7, the rough, wrinkled pelts 65 are fedbetween rollers l and 2, and thence between faster rollers 3 and 4 whichcauses stretching at 66, the herringbone corrugationsof rolls 3' and 4also simultaneously stretching the pelt sideways to deposit an overallstretched pelt on rear table 55.

As is apparent from the foregoing, the machine of the present inventionrequires no manual labor on the part of the operator other than placingthe pelt on the front table and feeding it into the opening between thefinger guard and the table, the pelt being stretched without injury tothe fur itself. By independent control of the pressure on each upperroll, the quality of the finished pelt may be maintained. Since thegears are readily changeable in the gear trains, speeds may be adjustedto take care of any type of pelt handled. V

Although herringbone grooved rollers are shown in the drawings for therear pair (3 and 4), it is to be understood that a straight grooving ofthese rolls may be employed, similar to that employed on rollers l and2.

aspect to the first gear, thereby enabling use of pelt may take place.

Shaft l4 has its main bearings l5 fixed to the sides of the frame I5 bymeans of crossbars. Hence this shaft is not moved when plates are movedor adjusted to accommodate different gears. Vertical movement of plateor arms 40 may be extended beyond the limits of arcuate slots 14 byproviding additional holes in plate 4| through which bolts 44 may beinserted (above and below the positions of the bolts 44 shown inFig.-3)..- 1 V Inthe presentmachine, it is necessary to provide forslippage of pelt 65 between the rollers in each pair of rollers, asotherwise tearing of the This slippage is controlled by adjusting thepressure on the upper rolls by compressing springs 32 and 32' asheretofore outlined.

For' sake of clarity, the pairs of rollers illustrated in Figures 5 and6 are not shown as meshing with each other. Actually, the rolls mesh asin Figure 7, but not tightly enough to clash to avoid excessive wear ofroller surface.

, I claim:

1. In a pelt-stretching machine having a pair of superimposedlaterally-ribbed, counter-rotating rollers, geared to each other forfeeding therebetween the pelt to be stretched, followed in tandemrelation thereto by another pair of ribbed counter-rotating rollers,geared to each other for pulling the pelt therebetween as said pelt isdischarged from the first pair of rollers, said second pair of rollersrotating at a speed faster than that of the first pair, a supportattached to the ends of said rollers, and driving means for driving saidrollers, the improvement comprising a cross-arm mounted substantially,laterally across each side of the frame under the ends of said rollers,adjustable fastening means near the ends of each cross-arm enablingfastening said cross-arm to the frame in any position of said cross-armafter the latter has been moved within a fixed limit inan arc with themiddle portion of the crossarm acting as the center of rotation of saidare,

a drive-shaft disposed between the cross-arms and having its endsmounted thereon at said center of rotation, a first gear mounted on eachand in operating contact with the third gear, and

power transmitting means from said driving means to said driveshafteachsecond gear being offset undera different pair of rollers, withredifferent gear ratios at each 'Side of the frame to provide differentspeeds for each pair of rollers while using shaft. 7 I

1 2. A pelt stretching machine according to claim I lin which the upperrolls are provided with circumferentially out continuous grooves ofdepth substantially equal to the height of the ribs, a cross-bar mountedabove each upper roll and.

parallel thereto and attached to the sides of the frame, and downwardlydisposed fingers having their upper ends attached to said lattercrossbars and their lower ends riding in the grooves 7 at the outersections of therolls to disengage any I only one driving means anddrivepelts which may have begun a second revolution around said rolls. 5

3. A pelt stretching machine according to claim 1 in which the endsoffthe rolls are provided with shafts riding in bearing blocks, the twolower shafts being encased in one block and the upper two shafts beingencased in separate blocks superimposed upon the first block.

4. A pelt stretching niachine according to claim 3 in which the frameabove the blocks is provided with cylinders fixed the frame and disposedone over each upper block, a helical spring disposed within eachcylinder with the bottom of the 10 gether when desired.

JOHN J. MOWAD.

No references cited.

